From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758263AbcIMN6h (ORCPT ); Tue, 13 Sep 2016 09:58:37 -0400 Received: from down.free-electrons.com ([37.187.137.238]:37929 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755231AbcIMN6d (ORCPT ); Tue, 13 Sep 2016 09:58:33 -0400 From: Boris Brezillon To: Thomas Gleixner , Jason Cooper , Marc Zyngier Cc: Nicolas Ferre , Alexandre Belloni , linux-kernel@vger.kernel.org, Boris Brezillon , stable@vger.kernel.org Subject: [PATCH v3 1/2] genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers Date: Tue, 13 Sep 2016 15:58:28 +0200 Message-Id: <1473775109-4192-1-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some irqchip drivers need to take the generic chip lock outside of the irq context. Provide the irq_gc_{lock_irqsave,unlock_irqrestore}() helpers to allow one to disable irqs while entering a critical section protected by gc->lock. Note that we do not provide optimized version of these helpers for !SMP, because they are not called from the hot-path. Signed-off-by: Boris Brezillon Cc: --- include/linux/irq.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index b52424eaa0ed..b13668f97648 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -945,6 +945,12 @@ static inline void irq_gc_lock(struct irq_chip_generic *gc) { } static inline void irq_gc_unlock(struct irq_chip_generic *gc) { } #endif +#define irq_gc_lock_irqsave(gc, flags) \ + raw_spin_lock_irqsave(&(gc)->lock, flags) + +#define irq_gc_unlock_irqrestore(gc, flags) \ + raw_spin_unlock_irqrestore(&(gc)->lock, flags) + static inline void irq_reg_writel(struct irq_chip_generic *gc, u32 val, int reg_offset) { -- 2.7.4